Hi Has anybody written algorithms for programming PIC16CXX's with the in-circuit programming method. I am just after some ideas to kickstart the task. Any help or suggestions will be appreciated. Carl Carl Wainwright Tel : +44 (0) 1635 584014 Graduate Design Engineer Fax : +44 (0) 1635 584098 Controlware Communications Systems Ltd Gateway House Newbury Business Park Newbury Berkshire RG14 2PZ